Before the murders started, Anthony Marquez's mom dialed his sergeant at Fort Carson to warn that her son was poised to kill.
It was February 2006, and the 21-year-old soldier had not been the same since being wounded and coming home from Iraq eight months before. He had violent outbursts and thrashing nightmares. He was devouring pain pills and drinking too much. He always packed a gun.
"It was a dangerous combination. I told them he was a walking time bomb," said his mother, Teresa Hernandez.
His sergeant told her there was nothing he could do. Then, she said, he started taunting her son, saying things like, "Your mommy called. She says you are going crazy."
Eight months later, the time bomb exploded when her son used a stun gun to repeatedly shock a small-time drug dealer in Widefield over an ounce of marijuana, then shot him through the heart.
Marquez was the first infantry soldier in his brigade to murder someone after returning from Iraq. But he wasn't the last.
Marquez's 3,500-soldier unit — now called the 4th Infantry Division's 4th Brigade Combat Team — fought in some of the bloodiest places in Iraq, taking the most casualties of any Fort Carson unit by far.
Back home, 10 of its infantrymen have been arrested and accused of murder, attempted murder or manslaughter since 2006. Others have committed suicide, or tried to.
Almost all those soldiers were kids, too young to buy a beer, when they volunteered for one of the most dangerous jobs in the world. Almost none had serious criminal backgrounds. Many were awarded medals for good conduct.
But in the vicious confusion of battle in Iraq and with no clear enemy, many said training went out the window. Slaughter became a part of life. Soldiers in body armor went back for round after round of battle that would have killed warriors a generation ago. Discipline deteriorated. Soldiers say the torture and killing of Iraqi civilians lurked in the ranks. And when these soldiers came home to Colorado Springs suffering the emotional wounds of combat, soldiers say, some were ignored, some were neglected, some were thrown away and some were punished.
Some kept killing — this time in Colorado Springs.